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authorArnaldo Carvalho de Melo <acme@redhat.com>2009-07-11 05:47:28 +0400
committerIngo Molnar <mingo@elte.hu>2009-07-11 12:24:11 +0400
commit52d422de22b26d96bbdfbc605eb31c2994df6d0b (patch)
treed335960701bc5b3cbefb842672d0d162d8684633 /tools/perf/Documentation
parent71a851b4d2a815adcfac09c1adda7ef6811fde66 (diff)
downloadlinux-52d422de22b26d96bbdfbc605eb31c2994df6d0b.tar.xz
perf report: Adjust column width to the values sampled
Auto-adjust column width of perf report output to the longest occuring string length. Example: [acme@doppio pahole]$ perf report --sort comm,dso,symbol | head -13 12.79% pahole /usr/lib64/libdw-0.141.so [.] __libdw_find_attr 8.90% pahole /lib64/libc-2.10.1.so [.] _int_malloc 8.68% pahole /usr/lib64/libdw-0.141.so [.] __libdw_form_val_len 8.15% pahole /lib64/libc-2.10.1.so [.] __GI_strcmp 6.80% pahole /lib64/libc-2.10.1.so [.] __tsearch 5.54% pahole ./build/libdwarves.so.1.0.0 [.] tag__recode_dwarf_type [acme@doppio pahole]$ [acme@doppio pahole]$ perf report --sort comm,dso,symbol -d /lib64/libc-2.10.1.so | head -10 21.92% pahole /lib64/libc-2.10.1.so [.] _int_malloc 20.08% pahole /lib64/libc-2.10.1.so [.] __GI_strcmp 16.75% pahole /lib64/libc-2.10.1.so [.] __tsearch [acme@doppio pahole]$ Also add these extra options to control the new behaviour: -w, --field-width Force each column width to the provided list, for large terminal readability. -t, --field-separator: Use a special separator character and don't pad with spaces, replacing all occurances of this separator in symbol names (and other output) with a '.' character, that thus it's the only non valid separator. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090711014728.GH3452@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/Documentation')
-rw-r--r--tools/perf/Documentation/perf-report.txt12
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 8aa3f8c88707..05774dfbd14f 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -33,6 +33,18 @@ OPTIONS
Only consider these symbols. CSV that understands
file://filename entries.
+-w::
+--field-width=::
+ Force each column width to the provided list, for large terminal
+ readability.
+
+-t::
+--field-separator=::
+
+ Use a special separator character and don't pad with spaces, replacing
+ all occurances of this separator in symbol names (and other output)
+ with a '.' character, that thus it's the only non valid separator.
+
SEE ALSO
--------
linkperf:perf-stat[1]